1 General概述This unit is fitted with the SIEMENS PLC controller together with othermatching electric appliances like imported contactor、thermal relay、airswitch and air switch，ensuring safe running of unit. In order to realizedependable operation of unit ,PLC is fitted with reliable programcontrolled system having application function up to current advancedlevel among the same trade. This unit is characterized byself-operation ,safety and dependability.本机组电气控制系统采用德国SIEMENS公司提供的PLC控制器，其他电器配套有进口接触器、热继电器、空气开关和三相电源监测器，可确保机组安全运行。
为了使机组可靠运行，电脑配置了完善的程序系统，应用功能达到目前同行业先进水平。
本电脑通讯端口采用RS-485信号标准的9针D型连接器，并符合EN50170所定义的PROFIBUS工业现场总线标准，实现计算机联网监控。
本机组有节能，自动运行，安全可靠等特点。
This operation instruction is applicable for the operation of Jirong water chillersof LRSFZ type.本操作指南适用于LRSFZ型风冷冷（热）水机组的操作运行。
2 Preparation before start-up开机前准备Make the following checks carefully before start-up:机组启动之前必须认真检查以下几项内容：Examine the electrical system (de-energized):电气系统的检查（断电检查）：The internal parts of de-energized electrical system can be checked. thechecked items cover the tightness of bolts for wires、contactor etc,screwing-up of wiring for comp and reliable connection of plugged –incomponents and PLC module,(confirm if they come loose duringtransportation) to make sure contact well.在确定机组断电情况下，可对电控系统内部进行检查。
主要检查导线、接触器等元件的螺丝接头是否紧固，星三角启动的接线方法是否正确（请参见随机图纸），压缩机接线是否牢固，各接插件及PLC模块连接是否牢固（是否有运输过程的松动）以确保接触良好。
Examine the unit机组的检查See if all the valves and safety locks are open, confirm if the controllerwith manual reset is at the reset state.所有安全锁和阀门是否打开，带手动复位的控制器是否已经复位。
Energize the system for examination:通电检查：Make the circuit breaker inside the unit to be at OFF state, and then energizethe system with AC380V±5% power supply having voltage difference ratebetween phases ≤3%, at this time , i f the system is normal, the indicator forcomputer should response to this. Start the contactor of supply fan orcondensing fan , then initiate the main power supply of supply fan andcondensing fan check whether the phase order is in compliance with that of thisunit, otherwise, change the phase order in the exterior power supply.将机组内部断路器置于OFF状态通入AC380V 5%，三相不平衡度≤3%的电源，通电后电脑指示灯应有反应。
如无反应则检查相序是否与本机相序相符（内部有三相电源监测器），请在总电源调换相序。
再接通冷凝风机主电路，检查冷凝风机转向，通常冷凝风机相序与三相电源监测器相序同步。
Prior to start of unit, the comp crankcase should be pre-heated for 8 hours.机组启动之前，要求压缩机曲轴箱预加热8小时。
3 How to operate computer电脑操作方法The touch display screen and its display触摸屏面板及显示说明：The display language adopt English version. You can check information andchange parameter easily according to requirement.所有画面均采用英文显示。
您可以根据需要查看信息和修改参数。
The model of touch screen adopted is KTP178, which is manufactured bySIEMENS corporation. When touch screen is powered, the power indicatinglight is on; the operation indicating light flash. When you do not touch thescreen a definite period, the screen will enter energy-saving status (backgroundlight will be off), if the touch screen is touched again, background light shall beturned on and display picture.此触摸屏为SIEMENS公司所产的KTP178，当您在一定的时间内没有触摸屏幕，屏幕将会进入节能状态，关闭背光灯，此时只需再次触摸屏幕，即可打开背光灯，正常显示画面。
Operation method操作方法After the system is checked, the power-supplying method meet requirement, theconnection is right, can enter startup and operation. First check the switch ofPLC controller whether or not on “run” status (setup when ex-work), makecontroller enter operation status, the indicating light of PLC will on. After being powered, the power indicating light is on, the operation indicating light flash.The main picture appear, displaying the current unit status, time temp. and other measuring value.系统检查完毕，供电方式能满足要求，接线无误，可进入开机操作。
首先检查接通机组内部断路器，PLC控制器上的开关是否拨到“RUN”位置（出厂设置），使控制器进入运行控制，电脑指示灯亮。
当触摸屏通电有显示后，即可出现初始屏幕，显示机组的软件编号，再触摸屏上任意位置出现主屏幕，显示当前机组状态、时间和温度。
触摸“开/关”后显示“开机状态”就表示开机运行，同样触摸“开/关”后显示“关机状态”就表示关机。
如果机组有故障将出现报警信息。
具体显示主屏幕如下：Local ON/OFF control近控机组启停控制After touch the “ON/OFF” menu, the following picture displays:触摸“ON/OFF”后，显示如下画面：Touch the menu“LOCAL CONT. ON/OFF”, “Unit RUN” displays, it means the unit has been started-up，to stop the unit, touch the“LOCAL CONT.ON/OFF”, then“Unit STOP”displays, it means unit is stopped.触摸“LOCAL CONT. ON/OFF”后显示“Unit RUN”表示开机运行，同样触摸“LOCAL CONT. ON/OFF”后显示“Unit STOP”表示关机。
操作完成后应尽快退出该画面，以避免误操作。
Export water temperature set:出水温度设定：T he following picture shall be display after the“Temp. SET” has been touched.触摸“Temp. SET”后显示如下画面：The set range of Chilled water temperature is 5~15℃，default value is 7℃;the set range of Hot water temp.set is 35~50℃,default value is 45℃。